title: Abuse potential of loperamide: adaptation of established evaluative methods to volunteer subjects.
mesh_terms: D003061:Codeine / Q000378:metabolism; D004305:Dose-Response Relationship, Drug; D004311:Double-Blind Method; D006801:Humans; D007700:Kinetics; D008139:Loperamide / Q000378:metabolism; D010919:Placebos; D011330:Prisons; D012025:Reflex, Pupillary / Q000187:drug effects; D019966:Substance-Related Disorders / Q000523:psychology*
chemical_list: D010919:Placebos; D008139:Loperamide; D003061:Codeine